1 | //driver_oss.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008 |
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5 | * |
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6 | * This file is part of roard a part of RoarAudio, |
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7 | * a cross-platform sound system for both, home and professional use. |
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8 | * See README for details. |
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9 | * |
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10 | * This file is free software; you can redistribute it and/or modify |
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11 | * it under the terms of the GNU General Public License version 3 |
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12 | * as published by the Free Software Foundation. |
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13 | * |
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14 | * RoarAudio is distributed in the hope that it will be useful, |
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | * GNU General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License |
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20 | * along with this software; see the file COPYING. If not, write to |
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21 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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22 | * |
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23 | */ |
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24 | |
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25 | #include "roard.h" |
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26 | #if defined(ROAR_HAVE_OSS_BSD) || defined(ROAR_HAVE_OSS) |
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27 | |
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28 | #define er() close(fh); return -1 |
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29 | |
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30 | int driver_oss_open(struct roar_vio_calls * inst, char * device, struct roar_audio_info * info) { |
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31 | int tmp; |
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32 | int fh; |
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33 | |
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34 | if ( device == NULL ) |
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35 | device = ROAR_DEFAULT_OSS_DEV; |
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36 | |
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37 | roar_vio_init_calls(inst); |
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38 | |
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39 | if ( (fh = open(device, O_WRONLY, 0644)) == -1 ) { |
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40 | ROAR_ERR("driver_oss_open(*): Can not open OSS device: %s: %s", device, strerror(errno)); |
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41 | return -1; |
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42 | } |
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43 | |
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44 | roar_vio_set_fh(inst, fh); |
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45 | |
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46 | switch (info->channels) { |
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47 | case 1: tmp = 0; break; |
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48 | case 2: tmp = 1; break; |
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49 | default: er(); |
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50 | } |
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51 | |
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52 | if ( ioctl(fh, SNDCTL_DSP_STEREO, &tmp) == -1 ) { |
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53 | er(); |
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54 | } |
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55 | |
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56 | switch (info->bits) { |
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57 | case 8: tmp = AFMT_S8; break; |
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58 | case 16: |
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59 | switch (info->codec) { |
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60 | case ROAR_CODEC_PCM_S_LE: tmp = AFMT_S16_LE; break; |
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61 | case ROAR_CODEC_PCM_S_BE: tmp = AFMT_S16_BE; break; |
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62 | default : er(); |
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63 | } |
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64 | break; |
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65 | default: er(); |
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66 | } |
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67 | |
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68 | if ( ioctl(fh, SNDCTL_DSP_SAMPLESIZE, &tmp) == -1 ) { |
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69 | er(); |
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70 | } |
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71 | |
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72 | tmp = info->rate; |
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73 | |
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74 | if ( ioctl(fh, SNDCTL_DSP_SPEED, &tmp) == -1 ) { |
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75 | er(); |
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76 | } |
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77 | |
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78 | if ( tmp < info->rate * 0.98 || tmp > info->rate * 1.02 ) { |
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79 | er(); |
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80 | } |
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81 | |
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82 | return 0; |
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83 | } |
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84 | |
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85 | int driver_oss_close(DRIVER_USERDATA_T inst) { |
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86 | return close(roar_vio_get_fh((struct roar_vio_calls *)inst)); |
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87 | } |
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88 | |
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89 | |
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90 | #endif |
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91 | //ll |
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